Measures of Variation
In this video, I discuss the most common ways to measure the variation of a dataset - the range, the variance, and the standard deviation. To navigate the lecture, you may use the following timecodes:
0:00 Intro
0:07 Introduction to measures of variation
0:49 Definition of a range
1:14 Introduction to standard deviation
1:46 How to find a population standard deviation?
4:00 How to find a sample standard deviation?
5:08 Why divide by n-1 instead of n?
6:01 Outro